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[PATCH] got "remove of named devices" working. 

database code still needs some major cleanup.
This commit is contained in:
greg@kroah.com 2003-10-17 23:32:17 -07:00 committed by Greg KH
parent 1c596cc0a5
commit ca99986023
4 changed files with 135 additions and 36 deletions
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31
udev-add.c
View File

@ -137,7 +137,6 @@ int udev_add_device(char *device, char *subsystem)
{
struct sysfs_class_device *class_dev;
struct device_attr attr;
struct udevice dbdev;
int major;
int minor;
char type;
@ -164,34 +163,18 @@ int udev_add_device(char *device, char *subsystem)
retval = get_major_minor(class_dev, &major, &minor);
if (retval) {
dbg ("get_major_minor failed");
dbg("get_major_minor failed");
goto exit;
}
memset(&dbdev, 0, sizeof(dbdev));
strncpy(dbdev.name, attr.name, NAME_SIZE);
if (class_dev->sysdevice) {
strncpy(dbdev.sysfs_path, class_dev->sysdevice->directory->path, PATH_SIZE);
strncpy(dbdev.bus_id, class_dev->sysdevice->bus_id, ID_SIZE);
}
strncpy(dbdev.class_dev_name, class_dev->name, NAME_SIZE);
if ((sysfs_get_name_from_path(subsystem, dbdev.class_name, NAME_SIZE)) != 0)
strcpy(dbdev.class_name, "unkown");
strcpy(dbdev.bus_name, "unknown");
if (class_dev->driver != NULL)
strncpy(dbdev.driver, class_dev->driver->name, NAME_SIZE);
else
strcpy(dbdev.driver, "unkown");
dbdev.type = type;
dbdev.major = major;
dbdev.minor = minor;
dbdev.mode = attr.mode;
retval = udevdb_add_device(device, class_dev, attr.name, type, major, minor, attr.mode);
if (retval != 0)
dbg("udevdb_add_device failed, but we are going to try to create the node anyway. "
"But remove might not work properly for this device.");
sysfs_close_class_device(class_dev);
retval = udevdb_add_udevice(&dbdev);
if (retval != 0)
goto exit;
return create_node(attr.name, type, major, minor, attr.mode);
exit:

5
udev-remove.c
View File

@ -45,6 +45,11 @@ static char *get_name(char *dev, int major, int minor)
static char name[100];
char *temp;
temp = udevdb_get_udevice_by_sysfs(dev);
dbg("udevdb_get_udevice_by_sysfs returned %s", temp);
if (temp != NULL)
return temp;
temp = strrchr(dev, '/');
if (temp == NULL)
return NULL;

130
udevdb.c
View File

@ -37,6 +37,7 @@
#include "namedev.h"
#include "udevdb.h"
#include "tdb/tdb.h"
#include "libsysfs/libsysfs.h"
static TDB_CONTEXT *udevdb;
@ -55,11 +56,15 @@ struct classdb_record {
char name[NAME_SIZE];
};
struct sysfsdb_record {
char name[PATH_SIZE];
};
/**
* namedb_record - device name is key, remaining udevice info stored here.
*/
struct namedb_record {
char sysfs_path[PATH_SIZE];
char sysfs_dev_path[PATH_SIZE];
char class_dev_name[NAME_SIZE];
char class_name[NAME_SIZE];
char bus[BUS_SIZE];
@ -177,6 +182,41 @@ static struct classdb_record *classdb_fetch(const char *cls,
return rec;
}
static struct sysfsdb_record *sysfsdb_fetch(const char *path)
{
TDB_DATA key, data;
char keystr[PATH_SIZE+2];
struct sysfsdb_record *rec = NULL;
if (strlen(path) >= PATH_SIZE)
return NULL;
memset(keystr, 0, sizeof(keystr));
strcpy(keystr, path);
dbg("keystr = %s", keystr);
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
data = tdb_fetch(udevdb, key);
if (data.dptr == NULL || data.dsize == 0) {
dbg("tdb_fetch did not work :(");
return NULL;
}
rec = (struct sysfsdb_record *)malloc(sizeof(struct sysfsdb_record));
if (rec == NULL) {
free(data.dptr);
return NULL;
}
memcpy(rec, data.dptr, sizeof(struct sysfsdb_record));
free(data.dptr);
return rec;
}
/**
* namedb_fetch
*/
@ -273,6 +313,32 @@ static int classdb_store(const struct udevice *dev)
return retval;
}
static int sysfs_store(const char *path, const struct udevice *dev)
{
TDB_DATA key, data;
char keystr[PATH_SIZE+2];
struct sysfsdb_record rec;
int retval = 0;
if (dev == NULL)
return -ENODEV;
memset(keystr, 0, sizeof(keystr));
strcpy(keystr, path);
dbg("keystr = %s", keystr);
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
strcpy(rec.name, dev->name);
data.dptr = (void *) &rec;
data.dsize = sizeof(rec);
retval = tdb_store(udevdb, key, data, TDB_REPLACE);
return retval;
}
/**
* namedb_store
*/
@ -292,7 +358,7 @@ static int namedb_store(const struct udevice *dev)
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
strcpy(rec.sysfs_path, dev->sysfs_path);
strcpy(rec.sysfs_dev_path, dev->sysfs_dev_path);
strcpy(rec.bus, dev->bus_name);
strcpy(rec.id, dev->bus_id);
strcpy(rec.class_dev_name, dev->class_dev_name);
@ -409,18 +475,41 @@ int udevdb_delete_udevice(const char *name)
}
/**
* udevdb_add_udevice: adds udevice to database
* udevdb_add_device: adds class device to database
*/
int udevdb_add_udevice(const struct udevice *dev)
int udevdb_add_device(const char *device, const struct sysfs_class_device *class_dev, const char *name, char type, int major, int minor, int mode)
{
if (dev == NULL)
return -1;
struct udevice dbdev;
if ((busdb_store(dev)) != 0)
if (class_dev == NULL)
return -ENODEV;
memset(&dbdev, 0, sizeof(dbdev));
strncpy(dbdev.name, name, NAME_SIZE);
if (class_dev->sysdevice) {
strncpy(dbdev.sysfs_dev_path, class_dev->sysdevice->directory->path, PATH_SIZE);
strncpy(dbdev.bus_id, class_dev->sysdevice->bus_id, ID_SIZE);
}
strncpy(dbdev.class_dev_name, class_dev->name, NAME_SIZE);
// if ((sysfs_get_name_from_path(subsystem, dbdev.class_name, NAME_SIZE)) != 0)
// strcpy(dbdev.class_name, "unknown");
strcpy(dbdev.bus_name, "unknown");
if (class_dev->driver != NULL)
strncpy(dbdev.driver, class_dev->driver->name, NAME_SIZE);
else
strcpy(dbdev.driver, "unknown");
dbdev.type = type;
dbdev.major = major;
dbdev.minor = minor;
dbdev.mode = mode;
if ((busdb_store(&dbdev)) != 0)
return -1;
if ((classdb_store(dev)) != 0)
if ((classdb_store(&dbdev)) != 0)
return -1;
if ((namedb_store(dev)) != 0)
if ((sysfs_store(device, &dbdev)) != 0)
return -1;
if ((namedb_store(&dbdev)) != 0)
return -1;
return 0;
@ -448,7 +537,7 @@ struct udevice *udevdb_get_udevice(const char *name)
}
strcpy(dev->name, name);
strcpy(dev->sysfs_path, nrec->sysfs_path);
strcpy(dev->sysfs_dev_path, nrec->sysfs_dev_path);
strcpy(dev->class_dev_name, nrec->class_dev_name);
strcpy(dev->class_name, nrec->class_name);
strcpy(dev->bus_name, nrec->bus);
@ -506,6 +595,27 @@ struct udevice *udevdb_get_udevice_by_class(const char *cls,
return dev;
}
char *udevdb_get_udevice_by_sysfs(const char *path)
{
struct sysfsdb_record *crec = NULL;
// struct udevice *dev = NULL;
if (path == NULL)
return NULL;
crec = sysfsdb_fetch(path);
if (crec == NULL)
return NULL;
// FIXME leak!!!
return crec->name;
// dev = udevdb_get_udevice(crec->name);
// free(crec);
//
// return dev;
}
/**
* udevdb_exit: closes database
*/

5
udevdb.h
View File

@ -16,7 +16,7 @@
struct udevice {
char name[NAME_SIZE];
char sysfs_path[PATH_SIZE];
char sysfs_dev_path[PATH_SIZE];
char class_dev_name[NAME_SIZE];
char class_name[NAME_SIZE];
char bus_id[NAME_SIZE];
@ -32,11 +32,12 @@ struct udevice {
extern void udevdb_exit(void);
extern int udevdb_init(int init_flag);
extern int udevdb_delete_udevice(const char *name);
extern int udevdb_add_udevice(const struct udevice *dev);
extern int udevdb_add_device(const char *device, const struct sysfs_class_device *class_dev, const char *name, char type, int major, int minor, int mode);
extern struct udevice *udevdb_get_udevice(const char *name);
extern struct udevice *udevdb_get_udevice_by_bus(const char *bus,
const char *id);
extern struct udevice *udevdb_get_udevice_by_class(const char *cls,
const char *cls_dev);
extern char *udevdb_get_udevice_by_sysfs(const char *path);
#endif /* _UDEVDB_H_ */